IGF 1 LR3 The Muscle Building Peptide Everyone's Talking About IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. It's a modified version CJC 1295 + Ipamorelin vs IGF 1 LR3 for Muscle Growth IGF 1 LR3 forces receptor desensitization in 4 6 weeks, requiring months off before you can use it again. CJC 1295 and Ipamorelin amplify your natural IGF 1 LR3: Benefits and Side Effects You Vita Bella Health IGF 1 LR3 in Aesthetic and Anti Aging Medicine: Benefits and Risks Hubmed Insulin Like Growth Factor 1 (IGF 1) Physiopedia